 <ul data-id="2Admin" class="nav" id="side-menu">
    <li class="active"><a href="#" data-id="3Admin"><i class="fa "></i><span class="nav-label"><b>二级菜单1</b></span><span class="fa arrow"></span></a>
        <ul class="nav nav-second-level collapse in">
            <li><a href="/cms/index.php?g=Admin&amp;m=Index&amp;a=three_one" data-id="4Admin">三级菜单1</a>
            </li>
        </ul>
    </li>
        <ul class="nav nav-second-level">
            <li><a href="/cms/index.php?g=Admin&amp;m=menu&amp;a=three_two" data-id="10Admin">三级菜单2</a>
            </li>
        </ul>
    <li class="active"><a href="#" data-id="9Admin"><i class="fa "></i><span class="nav-label"><b>二级菜单2</b></span><span class="fa arrow"></span></a></li></ul>

<dt>
    <a href="/cms/index.php?g=Admin&m=Index&a=two_one" data-id="3Admin"><b>二级菜单1</b></a>
</dt>
<dd style="display: block; ">
    <ul>
        <li>
        <a href="/cms/index.php?g=Admin&m=Index&a=three_one" data-id="4Admin">三级菜单1</a>
        </li>
        <li>
            <a href="/cms/index.php?g=Admin&m=menu&a=three_two" data-id="10Admin">三级菜单2</a>
        </li>
    </ul>
</dd><dt>
    <a href="/cms/index.php?g=Admin&m=Index&a=two_one" data-id="3Admin"><b>二级菜单1</b></a>
</dt>
<dd style="display: block; ">
    <ul>
        <li>
        <a href="/cms/index.php?g=Admin&m=Index&a=three_one" data-id="4Admin">三级菜单1</a>
        </li>
        <li>
            <a href="/cms/index.php?g=Admin&m=menu&a=three_two" data-id="10Admin">三级菜单2</a>
        </li>
    </ul>
</dd>